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Message: <blockquote data-quote="snoopdan" data-source="post: 5332773" data-attributes="member: 564991">Only reason you'd need a 4" coil or larger is if you're throwing stupid amounts of power (5kw+ per sub) to the driver for an excessive amount of time (not just burps).   Other then that, 3" coils are just fine for any other situation.Some subs (the MTX 9500 comes to mind) are a waste of a 4" coil.   They get stinky way before they're time and they just cant handle the power.  Then there are the 4hp based drivers where the spider/cone/surround fail before the coil goes up in smoke.</blockquote>

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